5. Fertilization: 



GIVEN: The property owner has elected to use a soluble fertilizer which has 

 a composition of 10-10-10 because of its lower cost. 



FIND: Determine the amount of fertilizer that will be required for the 

 initial application. 



SOLUTION: Initial fertilization with soluble fertilizer is 100 pounds of 

 nitrogen (N) and 100 pounds of phosphate per acre (43,560 square feet). This 

 planting is 9,000 square feet or 0.2 acre (0.1 hectare) and will require 

 20 pounds of nitrogen — 20 pounds of phosphate. 10-10-10 fertilizer is 

 10 percent nitrogen and 10 percent phosphate by weight. Therefore, 

 200 pounds of fertilizer will be needed to provide the 20 pounds of nitrogen 

 and 20 pounds of phosphate needed for this planting (see Sec. V). 



6. Estimating planting costs: 



GIVEN : The planting is 9,000 square feet in size, and sprigs will be used at 

 a spacing of 1.5 feet. 



FIND : Determine the number of planting units and man-hours required to plant 

 this project. 



SOLUTION (see Sec. VII) : 



1 



(1) No. of planting units = area of planting x 



(plant spacing)^ 



4,000 planting units = 9,000 square feet x feet 



(1.5)2 



^o\ IX u • J 1M £ T ^- -^ man-hours 



(2) Man-hours required = No. of planting units x - — — — : : 



1,000 planting units 



,„ , , „„„ , . . 10 man-hours 

 40 man-hours = 4,000 planting units x 



1,000 planting units 



23 



